hallo
<div class="o-slider__image-col"> <img class="o-slider__image a-image" alt="Woman with painful expression holding her stomach" src="/dummy/images/humans/tummyache.png " sizes="(min-width: 1440px) 720px, (min-width: 768px) 50vw, 100vw"> </div>
PS:
Woher kommt die Idee, sizes ohne srcset zu verwenden?